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)(17,18,23,24)(19,22,20,27)(21,25,29,32)(26,31,28,30)(35,41)(39,42)(43,47)(46,48)(2,7)(3,10)(9,15)(11,16)(17,19)(18,22)(20,23)(21,28)(24,27)(25,30)(26,29)(31,32)(33,34,38,36)(35,42,41,39)(37,40,45,44)(43,48,47,46)(4,12)(9,15)(11,16)(13,14)(18,24)(19,20)(21,29)(30,31)(34,36)(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)(18,22,24,27)(21,28,29,26)(25,31,32,30)(33,35,38,41)(34,39,36,42)(37,43,45,47)(40,46,44,48)(1,4,6,12)(2,9,7,15)(3,11,10,16)(5,14,8,13)(17,21)(18,25)(19,26)(20,28)(22,31)(23,29)(24,32)(27,30)(33,36,38,34)(35,42,41,39)(37,40,45,44)(43,46,47,48)(1,5,6,8)(2,3,7,10)(4,13,12,14)(9,16,15,11)(17,22)(18,19)(20,24)(21,30)(23,27)(25,28)(26,32)(29,31)(33,37)(34,40)(35,43)(36,44)(38,45)(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.