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