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