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