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