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