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