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