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