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