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