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