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