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