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