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