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