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