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