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