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