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