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