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