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