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