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