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