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