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