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