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