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