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