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