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