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)(35,36)(37,45)(38,39)(40,41)(42,46)(43,48)(44,47)(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)(35,41)(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)(34,40)(36,39)(37,47)(38,41)(42,44)(43,46)(45,48)(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)(33,36,38,40)(34,41,39,35)(37,48,46,44)(42,43,45,47)(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)(34,42,39,45)(35,43,41,47)(36,44,40,48)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.