that mixer has two outputs. one for left and one for right. you can record two separate tracks at the same time if you pan one hard right and one hard left, they will come out of those audio outs on the mixer.
that having been said, you don't have the right gear to record all of your drum mics on separate tracks if that's what you're after. check out the Tascam US16x08. it's affordable and decent enough quality. you can plug 8 mics directly into it and they will all show up as separate channels, and you have also 8 line ins, with 2 of them balanced for bass/guitar direct. you can get 16 total inputs at a time, so you could even then use two channels on your mixer to get two more mic preamps and send the signals out the main left and right on the back of the mixer to the line inputs on the back of the us16x08.
and all that having been said, you'd be much better off finding a local recording engineer and paying them to record your band this time around. build up the recording gear and skills over time, but if your bands wants to record a single and use it for marketing / promotion, have someone experienced do it this time and give yourself the chance to learn the craft, it takes a lot of time.