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