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