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