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