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