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