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