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