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