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