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