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