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