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