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