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