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