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