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