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)(11,13,15,16)(17,18,20,24)(19,27,29,22)(21,25,32,26)(23,30,28,31)(2,5)(3,7)(9,11)(10,13)(12,15)(14,16)(17,19)(18,22)(20,29)(21,31)(23,26)(24,27)(25,28)(30,32) involution — undirected(3,7)(6,8)(10,14)(13,16)(17,18,20,24)(19,28,29,23)(21,26,32,25)(22,30,27,31)(1,3,4,7)(2,6,5,8)(11,15)(13,16)(17,19,20,29)(18,23,24,28)(21,30,32,31)(22,25,27,26)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.