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