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