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