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