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