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