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