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)(19,25)(20,22)(21,30)(23,26)(24,28)(27,31)(29,32)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,19,22,28)(18,24,20,25)(21,29,23,31)(26,32,30,27)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(17,20,22,18)(19,27,28,32)(21,30,23,26)(24,31,25,29)(9,12,13,11)(10,16,15,14)(17,19,22,28)(18,25,20,24)(21,29,23,31)(26,27,30,32)(1,4,5,3)(2,6,8,7)(17,21)(18,26)(20,30)(22,23)(24,25)(29,31)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.