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