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