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