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