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