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