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