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