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