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