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