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