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)(11,13)(12,14)(15,16)(17,18,23,28)(19,24,29,39)(20,26,33,42)(21,27,22,25)(30,37,43,48)(31,36,32,38)(34,40,35,41)(44,47,45,46)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,30)(21,31)(22,32)(23,29)(25,38)(26,37)(27,36)(28,39)(33,43)(34,44)(35,45)(40,47)(41,46)(42,48)(9,11,12,16)(10,13,14,15)(18,25)(19,29)(20,33)(21,22)(24,36)(26,41)(27,28)(37,47)(38,39)(40,42)(44,45)(46,48)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,20,23,33)(18,26,28,42)(19,30,29,43)(21,35,22,34)(24,37,39,48)(25,40,27,41)(31,45,32,44)(36,46,38,47)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,21,23,22)(18,25,28,27)(19,31,29,32)(20,34,33,35)(24,38,39,36)(26,41,42,40)(30,44,43,45)(37,46,48,47)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.