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