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