Updated.
Skills: 12 ranks
The original had Hide, Jump, Move Silently, Search, Spot
Skills: Xaver have a +8 racial bonus to Move Silently checks.
Why does it have Hide? Doesn't it want to be found by its victims?
Well, it has predators of its own to fear (fire lizards, xorn, remorhaz, and harpies), so it wants to conceal itself from them.
The 3.0 original had the following skill ranks:
Hide +13 : +4 size, +3 Dex => 6 skill ranks
Jump +7 : +1 Str => 6 skill ranks
Move Silently +12 : +3 Dex, +8 racial => 1 skill rank
Search +5 : +0 Int => 5 skill ranks
Spot +5 : +0 Wis => 5 skill ranks
That's 23 skill ranks. Shouldn't it have 28 (11 Int *2 plus 3 HD *2 = 22 + 6)?
Anyhow, we've got 12 skill ranks to work with in 3.5, so I'd give it some racial bonuses to make up the slack.
It'll have a -6 speed penalty to Jump, so that needs to be a significant bonus, I'd go for +8 like its Move Silently.
Since it's got a lot of little eyes, how about giving it All-Around Vision with the standard +4 to Search and Spot? Then if we put 6 ranks in Hide, 4 in Jump, and 1 in Spot and Search it's only 1 point worse off in the skills:
Skill Ranks: Hide 6, Jump 4, Move Silently 0, Search 1, Spot 1
Skills: Hide +13, Jump +7, Move Silently +11, Search +5, Spot +5
All Around Vision: A xaver's ring of eyes gives it a +4 racial bonus to Search and Spot checks and means it cannot be flanked.
Skills: A xaver has a +8 racial bonus to Jump and Move Silently checks.
Breakdown
Hide +4 size, +3 Dex => 6 skill ranks => +13
Jump +1 Str, -6 speed, +8 racial : 4 skill ranks => +7
Move Silently [+3 Dex, +8 racial] : 0 skill rank => +11
Search [+0 Int +4 All-Around] 1 skill ranks => +5
Spot [+0 Int +4 All-Around] 1 skill ranks => +5