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