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