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