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