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