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