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