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