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