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