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