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