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