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