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