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