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