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)(11,14)(12,16)(13,15)(17,18,23,28)(19,24,30,32)(20,25,31,29)(21,26,22,27)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,19,23,30)(18,24,28,32)(20,26,31,27)(21,25,22,29)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(19,29)(20,24)(21,22)(25,30)(26,27)(31,32)(9,12,13,11)(10,16,15,14)(17,20,23,31)(18,25,28,29)(19,26,30,27)(21,24,22,32)(1,4,5,3)(2,6,8,7)(17,21)(18,26)(19,30)(22,23)(24,32)(27,28)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.