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