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