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