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