From Wiki:
Graf Zeppelin's expected role was that of a sea-going scouting platform and her initial planned air group reflected that emphasis: twenty
Fieseler Fi 167 biplanes for scouting and torpedo attack, ten
Messerschmitt Bf 109 fighters, and thirteen
Junkers Ju 87 dive-bombers.
[3] This was later changed to thirty Bf 109 fighters and twelve Ju 87 dive-bombers as carrier doctrine in Japan, Great Britain and the United States shifted away from purely reconnaissance duties towards offensive combat missions.
[3]
Very good workup on her:
http://www.bobhenneman.info/grafzeppelin.htm