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