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