I haven't tested this but both Hibernate 3.3 and 3.5 are pretty similar in terms of their JBoss Cache 2LC code, including the version used, so I think it should work fine. You can try with this config file:
http://svn.jboss.org/repos/hibernate/core/branches/Branch_3_5/cache-jbosscache/src/main/resources/org/hibernate/cache/jbc/builder/jbc-configs.xml