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