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