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)(11,16)(12,14)(13,15)(17,18,22,26)(19,24,29,21)(20,30,23,25)(27,32,31,28)(1,3)(2,5)(4,8)(6,7)(17,18)(19,27)(20,25)(21,32)(22,26)(23,30)(24,28)(29,31) involution — undirected(9,11,13,12)(10,14,15,16)(17,19)(18,24)(20,28)(21,26)(22,29)(23,32)(25,31)(27,30)(2,6)(5,7)(17,20,22,23)(18,25,26,30)(19,28,29,32)(21,27,24,31)(3,8)(5,7)(9,12,13,11)(10,14,15,16)(17,21,22,24)(18,19,26,29)(20,31,23,27)(25,32,30,28)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.