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