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