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