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