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