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