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