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