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