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