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