Hi!
The text for AD states, that you "add the chosen domain's spells to your class list of arcane spells" and that you "may learn these spells as normal for your class".
As stated on page 178 of the PHB Adding Spells to a Wizard's Spellbook, "you can learn spells only from schools whose spells [you] can cast".
Scribe Scrolls states that "you can create a scroll of any spell that you know".
The conclusion must be, that you add the domain spells to your list of arcane spells (as per the feat) and have to pen them in the universal magical language into your spellbook (if you use one). After you've done so, you are able to scribe a scroll with a penned and thereby learned [domain] spell.
Just do the follwing:
1.) Be true to your god's alignment.
2.) Spend 4 skill points on ranks for Knowledge (religion) and another 4 skill points on ranks for Spellcraft.
3.) Be an arcane spellcaster.
4.) Buy the feat with an appropriate feat slot (the early bird may take it as soon as 3rd level).
5.) Chose a domain and be aware that the domain's spells are now on your arcane list (not yet in your spellbook).
6.) Fetch your gold purse and buy some ink for the spells you are allowed to learn (no spells higher than your attained spell level maximum) or wait until you gain 2 spells for free advancing in levels (maybe as soon as 3rd level taking the feat Arcane Disciple).
7.) Pen your spell(s) into your spellbook.
8.a) Prepare the learned spell(s) at your discretion.
8.b) Scribe the spell(s) onto a scroll.
9.) Sell the spells to a bard for profit, because you may be the one who get some spells at lower spell levels and therefore may pen them at a cheaper price.
10.) Correct me if I'm wrong.
Kind regards