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