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