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