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