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