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