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