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