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)(23,28)(24,34)(25,30)(26,32)(27,31)(29,36)(33,35)(1,2)(3,4)(5,7)(6,10)(8,14)(9,15)(11,18)(12,13)(16,19)(17,20)(21,23)(22,28)(24,30)(25,34)(26,33)(27,29)(31,36)(32,35) involution — undirected(2,4)(21,24,26,36,27,35,25,28)(22,29,30,34,31,23,32,33)(5,8,9,17)(6,11,12,16)(7,14,15,20)(10,18,13,19)(23,29)(24,35)(28,36)(33,34)(2,4)(7,15)(10,13)(14,20)(18,19)(21,25,27,26)(22,30,31,32)(23,33,29,34)(24,28,35,36)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.