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