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