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