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