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