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