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