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