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