One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,9)(8,12)(10,14)(11,13)(15,16)(17,18,22,26)(19,27,29,32)(20,25,21,24)(23,30,31,28)(33,34,37,39)(35,41,42,48)(36,44,45,40)(38,46,47,43)(2,6)(4,12)(7,13)(8,9)(11,16)(14,15)(17,19)(18,23)(20,28)(21,30)(22,29)(24,27)(25,32)(26,31)(36,45)(40,44)(41,48)(43,46) involution — undirected(1,3,5,10)(2,7,9,14)(4,11,12,16)(6,13,8,15)(20,21)(24,25)(27,32)(28,30)(33,35,37,42)(34,38,39,47)(36,46,45,43)(40,48,44,41)(3,10)(7,14)(11,16)(13,15)(17,20,22,21)(18,24,26,25)(19,28,29,30)(23,27,31,32)(34,39)(38,47)(40,44)(41,48)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.