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