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)(17,18,23,27,22,26,30,31)(19,28,29,32,21,24,20,25)(1,3,4,8)(2,5,6,7)(9,10)(11,14)(12,13)(15,16)(17,19,22,21)(18,24,26,28)(20,23,29,30)(25,31,32,27)(2,6)(3,8)(10,13)(14,15)(17,20)(18,25)(19,23)(21,30)(22,29)(24,31)(26,32)(27,28) involution — undirected(2,6)(3,8)(9,11,12,16)(10,14,13,15)(17,21,22,19)(18,24,26,28)(20,30,29,23)(25,31,32,27)(2,6)(5,7)(18,26)(19,21)(20,29)(27,31) 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.