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