One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,9,11,8,12,15,16)(7,10,14,18,13,19,17,20)(21,22)(23,31)(24,29)(25,34)(26,35)(27,30)(28,32)(33,36)(1,2)(3,4)(9,15)(11,16)(14,17)(18,20)(21,23,27,25)(22,28,30,36)(24,32,26,33)(29,34,35,31)(2,4)(5,6)(7,10)(8,12)(9,16)(11,15)(13,19)(14,20)(17,18)(21,24,27,26)(22,29,30,35)(23,32,25,33)(28,34,36,31)(5,7,8,13)(6,10,12,19)(9,17,15,14)(11,20,16,18)(21,25,27,23)(22,28,30,36)(24,33,26,32)(29,34,35,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.