I've never hatched a Draik egg OR created a Krawk, but I've heard that when you hatch a Draik egg, since you can't name the egg like you'd name the petpet, you're taken to a Draik version of the Create-A-Pet page. You MIGHT be able to choose the gender there.
Otherwise, if you're looking for a female Draik, you could always raise your pet's intelligence a bit (I think it has to be "above average" or higher) and get it to use the Cape of the Sun in the battledome. That changes it's gender to female.
There doesn't seem to be a male alternative, though.