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