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