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