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