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)(19,23)(20,30)(21,25)(22,26)(24,28)(27,32)(29,31) involution — undirected(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,18)(19,24)(20,31)(21,32)(22,26)(23,28)(25,27)(29,30)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(17,19)(18,23)(20,21)(22,29)(24,32)(25,30)(26,31)(27,28)(9,12,13,11)(10,16,15,14)(19,20)(21,27)(23,30)(24,31)(25,32)(28,29)(1,4,5,3)(2,6,8,7)(17,20)(18,24)(19,27)(21,29)(22,28)(23,25)(26,30)(31,32)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.