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