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