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