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