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