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