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