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