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