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