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