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