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