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