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