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