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