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