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