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)(17,18)(19,26)(20,23)(21,29)(22,25)(24,30)(27,31)(28,32)(34,36)(35,41)(40,44)(43,47)(1,3,8,6)(2,9,7,12)(4,14,5,13)(10,16,11,15)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,31)(29,30)(33,34,38,36)(35,39,41,42)(37,40,45,44)(43,46,47,48)(1,4,8,5)(2,10,7,11)(3,13,6,14)(9,15,12,16)(17,19,22,20)(18,23,25,26)(21,27,30,28)(24,31,29,32)(33,34,38,36)(35,39,41,42)(37,44,45,40)(43,48,47,46)(1,5,8,4)(2,11,7,10)(3,14,6,13)(9,16,12,15)(17,20,22,19)(18,23,25,26)(21,28,30,27)(24,31,29,32)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47)(1,6,8,3)(2,12,7,9)(4,14,5,13)(10,16,11,15)(17,21,22,30)(18,24,25,29)(19,27,20,28)(23,31,26,32)(33,36,38,34)(35,42,41,39)(37,44,45,40)(43,48,47,46)(1,7,8,2)(3,12,6,9)(4,11,5,10)(13,16,14,15)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,31)(29,30)(33,37,38,45)(34,40,36,44)(35,43,41,47)(39,46,42,48)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.