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