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