Да, это возможно
- (void)willPresentActionSheet:(UIActionSheet *)actionSheet {
[actionSheet.subviews enumerateObjectsUsingBlock:^(id _currentView, NSUInteger idx, BOOL *stop) {
if ([_currentView isKindOfClass:[UIButton class]]) {
((UIButton *)_currentView).contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
((UIButton *)_currentView).contentEdgeInsets = UIEdgeInsetsMake(0, 30, 0, 0);
}
}];
}