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