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