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