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