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