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