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