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