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