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