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