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