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)(11,13)(12,14)(15,16)(17,18,22,24)(19,25,27,20)(21,23,31,32)(26,30,29,28)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,27)(18,20,24,25)(21,29,31,26)(23,30,32,28)(1,4,5,2)(3,7,8,6)(9,11)(10,13)(12,16)(14,15)(17,20,19,24,22,25,27,18)(21,30,26,23,31,28,29,32)(3,8)(6,7)(11,16)(13,15)(17,21)(18,23)(19,26)(20,28)(22,31)(24,32)(25,30)(27,29) involution — undirected(10,14)(13,15)(21,31)(23,32)(26,29)(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.