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