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