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