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