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