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