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)(17,18,23,27)(19,28,31,39)(20,25,34,44)(21,26,22,37)(24,35,40,30)(29,45,32,48)(33,42,36,43)(38,46,41,47)(1,3,5,8)(2,6,4,7)(10,11)(12,13)(1,2,5,4)(3,6,8,7)(9,11,14,10)(12,15,13,16)(17,19,21,35,23,31,22,30)(18,24,37,39,27,40,26,28)(20,32,36,47,34,29,33,46)(25,41,42,45,44,38,43,48)(1,4,5,2)(3,6,8,7)(9,12,14,13)(10,15,11,16)(17,20)(18,25)(19,29)(21,36)(22,33)(23,34)(24,38)(26,43)(27,44)(28,45)(30,47)(31,32)(35,46)(37,42)(39,48)(40,41)(9,13,14,12)(10,15,11,16)(17,21,23,22)(18,26,27,37)(19,30,31,35)(20,33,34,36)(24,39,40,28)(25,42,44,43)(29,46,32,47)(38,45,41,48)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.