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