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)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,18)(19,24)(20,25)(21,30)(22,26)(23,27)(28,32)(29,31) involution — undirected(10,14)(13,15)(17,19,22,28)(18,23,26,31)(20,27,21,29)(24,25,32,30)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,19)(18,24)(20,29)(21,27)(22,28)(23,30)(25,31)(26,32)(1,4,5,3)(2,6,7,8)(11,16)(13,15)(17,20)(19,27)(21,22)(24,32)(25,30)(28,29)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.