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