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