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