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