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