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