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