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