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