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