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)(17,18)(19,26)(20,25)(21,29)(22,24)(23,28)(27,32)(30,31) involution — undirected(1,3)(2,5)(4,7)(6,8)(9,10)(11,15)(12,16)(13,14)(19,27)(23,31)(26,32)(28,30) involution — undirected(3,7)(5,8)(10,14)(15,16)(17,19,22,27)(18,23,24,31)(20,28,21,30)(25,32,29,26)(2,6)(3,7)(9,11,13,12)(10,15,14,16)(18,24)(23,31)(25,29)(26,32)(3,7)(5,8)(9,12,13,11)(10,15,14,16)(17,20,22,21)(18,25,24,29)(19,28,27,30)(23,32,31,26)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.