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