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