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