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