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