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