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