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