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