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