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