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