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