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