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