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