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