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