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