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