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