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