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