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