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