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