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)(17,18,22,26,23,27,21,25)(19,28,29,20,24,31,30,32)(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16)(17,19,23,24)(18,20,27,32)(21,29,22,30)(25,31,26,28)(2,8)(4,5)(7,15)(9,10)(11,16)(12,14)(17,20)(18,24)(19,27)(21,28)(22,31)(23,32)(25,29)(26,30) involution — undirected(17,21,23,22)(18,25,27,26)(19,29,24,30)(20,31,32,28)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.