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