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