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