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