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