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