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