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