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