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