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)(21,22,27,30)(23,25,29,26)(24,28,33,36)(31,32,35,34)(5,7)(6,10)(8,15)(9,14)(11,19)(12,18)(13,16)(17,20)(21,23,26,22,27,29,25,30)(24,31,34,28,33,35,32,36)(2,4)(5,8)(6,11)(7,13)(9,16)(10,17)(12,20)(14,15)(18,19)(21,24)(22,28)(23,31)(25,32)(26,34)(27,33)(29,35)(30,36) involution — undirected(8,16)(11,20)(13,15)(17,19)(21,25,27,26)(22,29,30,23)(24,32,33,34)(28,35,36,31)(7,14)(10,18)(13,15)(17,19)(24,33)(28,36)(31,35)(32,34) 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.