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