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)(11,13)(12,14)(15,16)(17,18)(19,27)(20,29)(21,25)(22,26)(23,31)(24,30)(28,32)(2,5)(6,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,25)(21,23)(22,30)(26,27)(28,31)(29,32) involution — undirected(11,15)(13,16)(17,20,29,18,22,31,23,26)(19,28,32,27,30,25,21,24)(11,15)(13,16)(17,21)(18,25)(19,29)(20,27)(22,32)(23,30)(24,31)(26,28) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,16)(18,26)(19,30)(20,31)(21,32)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.