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