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