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