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