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