I just looked it up on SeatGuru, and there is a page for the airline, but I couldn't seem to find any seat maps for it. If I were you, I'd look up other airlines' configurations for 737-800s, as they all tend to be fairly similar. I've included some links below that might be helpful.

http://www.seatguru.com/airlines/Sou...37-800_new.php
http://www.seatguru.com/airlines/GOL...737-800_V1.php
http://www.seatguru.com/airlines/Del..._737-800_A.php
http://www.seatguru.com/airlines/Air...ng_737-800.php
http://www.seatguru.com/airlines/Chi...ng_737-800.php