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