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