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