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