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