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