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