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