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