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