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