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