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