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