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