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