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