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