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