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