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