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