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