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