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