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