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