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