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