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