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