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