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