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