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