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