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