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