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