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)(19,27)(20,29)(21,26)(22,23)(24,30)(25,31)(28,32)(1,2)(3,4)(5,6)(7,8)(10,11)(14,15)(18,23)(20,31)(24,27)(26,28) involution — undirected(2,6)(4,7)(9,11,13,10)(12,15,16,14)(18,23)(21,32)(24,27)(25,29)(2,6)(3,8)(9,12,13,16)(10,14,11,15)(17,19,22,30)(18,24,23,27)(20,26,31,28)(21,29,32,25)(1,3)(2,7)(4,6)(5,8)(17,20,22,31)(18,25,23,29)(19,28,30,26)(21,24,32,27)(1,4,5,7)(2,3,6,8)(17,21,22,32)(18,26,23,28)(19,29,30,25)(20,24,31,27)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.