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