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