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