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