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