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