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