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