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