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