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