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