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