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