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