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