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