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