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