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