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