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