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