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