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