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