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