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