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