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