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