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