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