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