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