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