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