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