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