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