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