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