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