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