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