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