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