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