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