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