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