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