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