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