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