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