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