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