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