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