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