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