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