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