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