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