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