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