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