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