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