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