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