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