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