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