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