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