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