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