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