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