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