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