One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,13,15,10)(8,16,18,11)(9,12)(14,19)(17,20)(21,22)(23,32)(24,29)(25,28)(26,35)(27,31)(30,33)(34,36)(1,2)(3,4)(5,7,9,15)(6,10,12,13)(8,17,18,14)(11,20,16,19)(21,23,27,33)(22,28,31,36)(24,25,26,34)(29,30,35,32)(2,4)(5,6)(7,10)(8,11)(9,12)(13,15)(14,19)(16,18)(17,20)(21,24,27,26)(22,29,31,35)(23,25,33,34)(28,30,36,32)(5,8,9,18)(6,11,12,16)(7,14,15,17)(10,19,13,20)(21,25,27,34)(22,30,31,32)(23,24,33,26)(28,29,36,35)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.