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