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