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)(17,18,23,22)(19,24,26,21)(20,25,29,30)(27,31,32,28)(33,34,39,38)(35,42,36,40)(37,45,46,41)(43,47,44,48)(1,3,7,6)(2,8,9,5)(4,13,15,11)(10,14,12,16)(17,19)(18,24)(20,27)(21,22)(23,26)(25,31)(28,30)(29,32)(35,36)(37,46)(40,42)(41,45)(2,9)(5,8)(10,12)(14,16)(19,26)(21,24)(27,32)(28,31)(33,35,39,36)(34,40,38,42)(37,44,46,43)(41,48,45,47)(1,4,7,15)(2,10,9,12)(3,11,6,13)(5,14,8,16)(17,20)(18,25)(19,27)(21,28)(22,30)(23,29)(24,31)(26,32)(33,36,39,35)(34,40,38,42)(37,44,46,43)(41,47,45,48)(1,5,7,8)(2,3,9,6)(4,14,15,16)(10,11,12,13)(17,21)(18,19)(20,28)(22,26)(23,24)(25,27)(29,31)(30,32)(33,37)(34,41)(35,43)(36,44)(38,45)(39,46)(40,47)(42,48)(1,6,7,3)(2,8,9,5)(4,11,15,13)(10,14,12,16)(17,22,23,18)(19,21,26,24)(20,25,29,30)(27,31,32,28)(33,38,39,34)(35,42,36,40)(37,45,46,41)(43,48,44,47)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.