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