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