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