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