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