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