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