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