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