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