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