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