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