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