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