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