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