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