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