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