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