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