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