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