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