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