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