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