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