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