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