Sure! Just like some naturists shave their legs, and some has a mustache, there are also naturists who trim or shave their pubic hairs, and som who doesn't.

Most naturist won't even notice wether you are shaven or not, so you don't have to bother.

If you are interested in this subject, and you understand some Swedish language, you can read article about shaving by Carl Johan Rehbinder, the man behind naken.it.