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