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)(19,26,21,24)(20,28,29,25)(27,31,30,32)(1,3,7,6)(2,4,8,5)(9,10)(11,12)(13,15)(14,16)(17,19,23,21)(18,24,22,26)(20,27,29,30)(25,31,28,32)(1,4,7,5)(2,3,8,6)(9,11,13,16)(10,14,15,12)(20,29)(25,28)(27,30)(31,32)(2,8)(4,5)(11,16)(12,14)(17,20,23,29)(18,25,22,28)(19,27,21,30)(24,31,26,32)(1,5,7,4)(2,3,8,6)(9,12)(10,11)(13,14)(15,16)(17,21,23,19)(18,24,22,26)(20,27,29,30)(25,32,28,31)(1,6,7,3)(2,5,8,4)(9,10)(11,14)(12,16)(13,15)(17,22,23,18)(19,26,21,24)(20,28,29,25)(27,32,30,31)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.