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