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