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