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