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