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