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