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)(11,14)(12,13)(15,16)(17,18,23,28,22,25,20,26)(19,21,30,32,29,24,27,31)(1,3,4,7)(2,5,6,8)(10,13)(11,15)(17,19)(18,24)(20,27)(21,25)(22,29)(23,30)(26,32)(28,31)(2,6)(5,8)(10,13)(14,16)(18,25)(19,29)(26,28)(27,30) involution — undirected(9,11,12,15)(10,14,13,16)(17,20,22,23)(18,26,25,28)(19,30,29,27)(21,32,24,31)(10,13)(14,16)(17,21,23,32,22,24,20,31)(18,27,28,19,25,30,26,29)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.