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