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