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)(19,29)(20,28)(21,24)(22,26)(23,25)(27,30)(31,32)(1,3)(2,6)(4,7)(5,8)(9,11)(10,12)(13,15)(14,16)(17,19,22,21,23,30,20,31)(18,24,28,29,25,32,26,27)(1,4,5,2)(3,7,8,6)(10,15)(11,16)(18,25)(19,30)(21,31)(26,28)(3,8)(6,7)(9,12,14,13)(10,11,15,16)(17,20,23,22)(18,26,25,28)(19,21,30,31)(24,29,32,27)(9,13,14,12)(10,11,15,16)(17,21,22,30,23,31,20,19)(18,27,28,24,25,29,26,32)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.