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