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