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