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