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