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