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