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