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