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