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