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