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