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