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