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