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