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