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