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