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