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