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