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