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