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