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