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