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