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