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