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