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