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