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)(21,22,24,28,25,29,33,27)(23,26,32,35,31,34,30,36)(5,7,8,15,10,17,9,16)(6,11,18,20,13,19,12,14)(21,23,24,32,25,31,33,30)(22,26,28,35,29,34,27,36)(2,4)(5,8,10,9)(6,12,13,18)(7,15,17,16)(11,14,19,20)(22,27)(23,30)(24,33)(26,34)(28,29)(31,32)(5,7,8,15,10,17,9,16)(6,11,18,20,13,19,12,14)(23,31)(26,34)(30,32)(35,36)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.