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