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