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