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