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