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