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