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