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