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