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