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