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