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