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