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