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