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