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