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