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