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