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