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