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