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