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