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