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