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