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