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