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