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