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