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)(11,15,16,12)(17,18,21,22)(19,20,23,24)(25,26,28,30)(27,29,31,32)(1,3,5,8)(2,4,6,7)(9,10)(11,12)(13,14)(15,16)(17,19,21,23)(18,20,22,24)(27,31)(29,32)(2,6)(4,7)(10,14)(12,15)(17,20)(18,19)(21,24)(22,23)(25,27,28,31)(26,29,30,32)(1,3)(2,7)(4,6)(5,8)(9,11)(10,15)(12,14)(13,16)(17,19)(18,20)(21,23)(22,24)(25,26)(27,29)(28,30)(31,32) involution — undirected(1,4,5,7)(2,3,6,8)(9,12,13,15)(10,11,14,16)(17,18)(19,20)(21,22)(23,24)(25,26)(27,29)(28,30)(31,32)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.