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