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