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