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