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