Cajutel is now traded on IDEX:

https://idex.market/eth/caj

Detailed guide can be found here:
https://www.reddit.com/r/auroradao/comments/7c3j6z/idex_user_guides_how_to_trade/

A demo video on how to trade on IDEX
https://www.youtube.com/watch?v=RWWdxxJ1PJo