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