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