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