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