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