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