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